Ok, so I like to use the line( function to draw lines on the graph, but every time I want to update the screen I have to use ClrDraw, and repaint the entire screen, and it takes forever, making the programs VERY slow and hard to see. Is this inevitable because I am not writing an extremely long program, just a pong type game?
There is an optional DRAWMODE argument for Line. Setting it to 0 draws a white line, while 1 draws a black line. You could use this to draw white lines over the parts of the screen that need to be replaced, and then redraw only those parts.